3. Determine neural signatures of surgical and training induced motor improvements. H3: After directed task-based training, brain activity during voluntary pinch will extend to adjacent areas (larger representation, greater activity), in sensorimotor brain areas, facilitating the ability to voluntarily increase the transferred Br activation in pinch. Secondary analyses will contrast size and activation level of brain changes with pinch activation in patients who receive training relative to non-impaired and non-surgical participants.